CheckedListBoxControl 实现复选框的单选与多选功能

 1   //首先触发SelectedIndexChanged事件，然后再触发ItemCheck事件
 2        
 3         //存储选中的复选框的值
 4         string strGXY=string.Empty; 
 5         private void chkGXYGrade_SelectedIndexChanged(object sender, EventArgs e)
 6         {
 7 
 8             //先把所有的选择框的状态都置为不选中的状态
 9             for (int i = 0; i < chkGXYGrade.Items.Count; i++)
10             {
11                 chkGXYGrade.SetItemCheckState(i, CheckState.Unchecked);
12             }
13         }
14 
15         private void chkGXYGrade_ItemCheck(object sender, DevExpress.XtraEditors.Controls.ItemCheckEventArgs e)
16         {
17             //如果复选框选中的数目大于0，把选中的复选框的索引和e.Index（获取的当前选中点击的复选框的索引）比较，如果相等就把该复选框选中，否则置为非选中状态
18             if (chkGXYGrade.CheckedItems.Count > 0)
19             {
20                 for (int i = 0; i < chkGXYGrade.Items.Count; i++)
21                 {
22                     if (i != e.Index)
23                     {
24                         chkGXYGrade.SetItemCheckState(i, CheckState.Unchecked);
25                     }
26                 }
27             }
28             else
29             {
30               
31                 //如果复选框选中的数据小于0 ，则把所有的复选框的状态都置为未选中的状态
32                 for (int i = 0; i < chkGXYGrade.Items.Count; i++)
33                 {
34 
35                     chkGXYGrade.SetItemCheckState(i, CheckState.Unchecked);
36                     strGXY = string.Empty;
37                 }
38 
39             }
40 
41             
42             //循环复选框，根据选中的状态来获取选中的复选框的值
43             for (int i = 0; i < chkGXYGrade.Items.Count; i++)
44             {
45                 if (chkGXYGrade.Items[i].CheckState == CheckState.Checked)
46                 {
47                     strGXY = chkGXYGrade.GetItemText(i).ToString();
48                 }
49             }
50         }

 1   //记录复选框选中的状态
 2         CheckState csGXB;
 3 
 4         //存储复选框选中的值（多选以‘/’区分  ）
 5         string strGXB = string.Empty;
 6 
 7         //先触发SelectedIndexChanged事件，再触发ItemCheck事件
 8         private void chbGXBlb_SelectedIndexChanged(object sender, EventArgs e)
 9         {
10             switch (csGXB)
11             {
12                 case CheckState.Checked:
13 
14                     strGXB = string.Empty;
15                     for (int i = 0; i < chbGXBlb.Items.Count; i++)
16                     {
17                         //获取选中的复选框的值
18                         if (chbGXBlb.GetItemChecked(i))
19                         {
20                             if (strGXB == string.Empty)
21                             {
22                                 strGXB = chbGXBlb.GetItemText(i);
23                             }
24                             else
25                             {
26                                 strGXB += "/" + chbGXBlb.GetItemText(i);
27                             }
28                         }
29                     }
30                     break;
31                 case CheckState.Unchecked:
32                     strGXB = string.Empty;
33                     for (int i = 0; i < chbGXBlb.Items.Count; i++)
34                     {
35                         if (chbGXBlb.GetItemChecked(i))
36                         {
37                             if (strGXB == string.Empty)
38                             {
39                                 strGXB = chbGXBlb.GetItemText(i);
40                             }
41                             else
42                             {
43                                 strGXB = strGXB + "/" + chbGXBlb.GetItemText(i);
44                             }
45                         }
46                     }
47                     break;
48 
49             }
50 
51         }
52 
53 
54   private void chbGXBlb_ItemCheck(object sender, DevExpress.XtraEditors.Controls.ItemCheckEventArgs e)
55         {
56             // e.State,获取当前复选框的选中还是未选中的状态（Checked 或UnChecked）
57             csGXB = e.State;
58             chbGXBlb_SelectedIndexChanged(null, null);
59         }